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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your Science knowledge and support exam preparation. Choose a topic below to get started.
| 2351. |
Give reasons for the following.!. Motion is categorised in different types. |
| Answer» <p>There are three maincategories: LinearMotionis when all of a body moves in a line (straight or curved) with all partsmovingin the same direction. AngularMotionis when a body or part of it moves in a circle (or part of) about a point called the axis of rotation.</p> | |
| 2352. |
Short Answer Questions.Give reasons for the following.1. Motion is categorised in different types |
| Answer» <p>The motion of objects can be classified depending on the way they move. the types of motion are :-i) Rectilinear motion:An object is said to have rectilinear motion if it moves from one point to another in a straight line.eg :- very common example of rectilinearmotion is the motion of a moving car on a straight road.ii)Circular motion:An object is said to possess circular motion if it moves from one point to another in such a way that its distance from a fixed point always remains constant.</p> | |
| 2353. |
Name the various components obtained from the fractional distillation of crude oil. Mention at least oneuse of each. |
| Answer» <p>Fractional distillationis theseparationof amixtureinto its component parts, orfractions.Chemical compoundsare separated by heating them to atemperatureat which one or more fractions of the mixture willvaporize. It usesdistillationtofractionate. Generally the component parts have boiling points that differ by less than 25°C from each other under a pressure of oneatmosphere. If the difference in boiling points is greater than 25°C, asimple distillationis typically used.</p> <p>thanks</p> <p>Fractional distillationis theseparationof amixtureinto its component parts, orfractions.Chemical compoundsare separated by heating them to atemperatureat which one or more fractions of the mixture willvaporize. It usesdistillationtofractionate. Generally the component parts have boiling points that differ by less than 25°C from each other under a pressure of oneatmosphere. If the difference in boiling points is greater than 25°C, asimple distillationis typically used.</p> | |
| 2354. |
Name the varous components obtained from the fractional distilation of crude oil Mention at least oneuse of each |
| Answer» <p>Products in a crude oil fractionator are obtained in accordance with their boiling points. The lightest product forms top product from the Column whereas the heaviest boiling product is the bottom product.</p><p>Starting from top of the fractionator, the products are as under</p><p>Unstabilized naphtha, I.e a mixture of naphtha and LPG</p><p>Kerosene</p><p>Light gas oil ( Diesel)</p><p>Heavy gas oil</p><p>Reduced crude oil (Bottom product which is the feed for vacuum distillation unit)</p> | |
| 2355. |
a) What changes occur in a person during puberty? |
| Answer» <p>It is not grade 2 question dear ☺</p> <p>I want the answer</p> <p>secondary sexual charavters are inbited</p> <p>Changes at puberty:(i) Sudden increase in height and weight.(ii) Broadening of shoulders and widening of chest in boys. In girls, the region below waist becomes wider.(iii) In boys, under the influence of hormones, the larynx becomes prominent, the vocal cords become longer and thicker. These changes cause the voice to become hoarse.(iv) Appearance of hair in areas such as underarms, face, hands, and legs.(v) Appearance of acne as a result of excessive secretion of oil from skin.(iv) Testis grows and starts producing sperms in males, whereas in females, the ovary enlarges and starts producing matured eggs.</p> | |
| 2356. |
puberty |
| Answer» <p>The period during which adolescents reach sexual maturity and become capable of reproduction.</p> | |
| 2357. |
Find the kinetic energy of a ball of mass 200g moving at a speed of 20m/s.(0.004J) |
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| 2358. |
what is the universe? what are the heavenly bodies? |
| Answer» <p>The new universe is a collection of all the body is present in the atmosphere which includes the Cosmos the stars and other such a heavenly bodies the universe is endless and they are more than 10 ^ 11 galaxies in the universe which is constituted in the whole of universe.</p><p>Heavenly body (plural heavenly bodies) A natural celestial object, visible in the sky, such as a star, planet, natural satellite, asteroid, comet, the Moon or the Sun. </p><p>There are more than 10 to the power 11 galaxies in the universe and hence why this you can imagine the size of the whole of the universe which is absolutely endless.</p><p>Here are the names of 6 heavenly bodies that the universe constitutes of:-⚪ Galaxies⚪10¹¹ stars in each galaxy⚪ planets in each galaxy⚪ comets⚪Meteors⚪ various types of belts:- between planets.⚪ Satellites of planets.</p> | |
| 2359. |
Name the heavenly body closest to the earth. |
| Answer» <p>Together with the Moon, Venus and Mars are the planets nearest to the Earth. All of these celestial bodies are continuously held captive to thesunby the effect of gravity; the bodies are continually forced to orbit thesunas the central body in elliptical orbits.</p> | |
| 2360. |
etweel ue pole of thĂŠ mirror and its principal tocus.Where should an object be placed in front of a convex lens to get asize of the object?(a) At the principal focus of the lensb) At twice the focal length(c) At infinityd) Between the optical centre of the lens and its priscipai ocusand a thin spherical lens have each a foral engit d |
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| 2361. |
te as a polarizer with refractive index 1.633, calculate the angle of incidence at5. For a glass plawhich light is polarized. |
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| 2362. |
Q.17 A physical quantity P is given by PA3 B2The quantityCAD2-4which brings in the maximum percentage error in P is(a) A(c) C(b) B(d) D |
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| 2363. |
1. The teeth, used to tear food into pieces, are known as-(a) incisors(b) canines(c) molars |
| Answer» <p>(b) canines</p><p>Incisors are used to take bites of your food. Canines are the sharpest teeth and are used for ripping and tearing food apart.Molars are also used for chewing and grinding food. </p> <p>Write answer of this question is B canines</p> | |
| 2364. |
53. How many legs does a cockroach have ? How does a cockroach move on the ground ?S4. How many wings does a cockroach have ? How does a cockroach fly in air ? |
| Answer» <p>A cockroach is similar to other insects in the way its body is constructed. The body is divided into three parts—head, thorax, and abdomen.Threepairs of legs are attached to the thorax. Most cockroaches havethreejoints on each leg, which means they have 18 knees!</p> | |
| 2365. |
5. Give any two properties of salts |
| Answer» <p>Salt is hygroscopic in nature. Due to strong electrostatic force of attraction between ions, the melting point of sodium chloride is 800.8 °C and boiling point is 1465 °C. Its vapour pressure at 865 °C is 1 mm Hg and density of NaCl is 2.165 g c m 3 .</p> | |
| 2366. |
5. Write any two properties of a magnet. |
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| 2367. |
5.Write any two properties of a magnet. |
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| 2368. |
5 Write any two properties of a magnet. |
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| 2369. |
Diffe dience between the living andnon living onigonisum |
| Answer» <p>1. living things are those things which can breathe and show movement.ex- human beings,animals2.Non living things are those things which cannot breathe and do not show movement.ex- chair ,table</p> <p>living things:-who can breathe and move one place to another it is called living things Non-living things:-who can not breath and can not move one place to another that are called Non-living things example:-door,ball</p> <p>living things can be grow but non living things cannot grow</p> <p>living things can move from one place to another </p><p>non living things cannot move from one place to another </p> | |
| 2370. |
what is difference between living and non living things |
| Answer» <p>Some of the daily life examples of living things around us are human beings, animals, plants and micro organisms. Non-livings things do not exhibit any characteristics of life. They do not grow, respire, need energy, move, reproduce, evolve, or maintain homeostasis. These things are made up of non-living materials.</p> <p>thanks I know correct answer</p> <p>Some of the daily life examples ofliving thingsaround us are humanbeings, animals, plants and microorganisms.Non-livingsthingsdo not exhibit any characteristics of life. They do not grow, respire, need energy, move, reproduce, evolve, or maintain homeostasis. Thesethingsare made up ofnon-livingmaterials.</p> | |
| 2371. |
Whad (L Uy %âf\" |
| Answer» <p>Light is electromagnetic radiation within a certain portion of the electromagnetic spectrum. The word usually refers to visible light, which is the visible spectrum that is visible to the human eye and is responsible for the sense of sight.Please hit the like button if this helped you</p> | |
| 2372. |
The dough which is used for making dosaand idly in fermented by1) Algae3) Viruses2) Bacteria4) Viroids |
| Answer» <p>bacteria is used for making dosa and idli</p> <p>2) bacteria is correct option as idli fermentation is caused by lactic acid bacteria.</p> | |
| 2373. |
NEET1. The dough which is use for makingand idly in fermented by1)Algae3) Viruses2) Bacteria4) Viroids |
| Answer» <p>Fermentation of idli or dosa batter is carried out largely by lactic acid bacteria (not yeast as mentioned in your question), the same class of microorganisms that are found in ‘dahi.’</p> | |
| 2374. |
What is an indifference curve |
| Answer» <p>In economics, an indifference curve connects points on a graph representing different quantities of two goods, points between which a consumer is indifferent. </p><p>In other words, an indifference curve is the locus of various points showing different combinations of two goods providing equal utility to the consumer.</p><p>Like my answer if you find it useful!</p> | |
| 2375. |
name the viruses mode of nutrition |
| Answer» <p>Please like the solution 👍 ✔️</p> | |
| 2376. |
what is living things? |
| Answer» <p>Definition</p><p>Any organism or a living form that possesses or shows the characteristics oflifeor beingalive</p><p>Supplement</p><p>Living things are those that display the following characteristics</p><p>an organized structure, being made up of acellorcells</p><p>requiresenergyto survive or sustain existence</p><p>ability to reproduce</p><p>ability to grow</p><p>ability to metabolize</p><p>ability to respond tostimuli</p><p>ability to adapt to theenvironment</p><p>ability to move</p><p>ability to respire</p><p>Examples of living things include thebacteria,protozoa,plants,fungi,animals,humans,etc.Virusesare not absolutely living or non-living. When outside theirhost,virusesare inactive and seemingly inanimate. When inside their host, they became active and alive, capable of utilizing thehost cell's structures and replicate.</p> | |
| 2377. |
what is a living things |
| Answer» <p>Ans :- Any organism or a living form that possesses or shows the characteristics of life or being alive. Supplement. Living things are those that display the following characteristics. an organized structure, being made up of a cell or cells. requires energy to survive or sustain existence.</p> | |
| 2378. |
what is the main thing for body |
| Answer» <p>oxygen is main thing for body</p> | |
| 2379. |
How desDescribe the various ways by which seeds are dispersed.Tuith those in Column II: |
| Answer» <p>thanks 😊</p> | |
| 2380. |
6. What happens during fertilization in plants7. Describe the various ways by which seeds are dispersed. |
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| 2381. |
Describethe various ways by which seeds are dispers |
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| 2382. |
8. Describe the various ways by which seeds are dispersed. |
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| 2383. |
what are the characteristic features of seeds dispersed by water and animals |
| Answer» <p>Most water dispersed seeds grow with some type of air cavity inside. Coconuts, for example, are hollow. This air cavity is large enough to counteract the weight of the seed and keep it floating as long as the shell is not pierced.</p><p>The animal eats the fruit but only the juicy part is digested. The stones and pips pass through the animal's digestive system and are excreted to form new plants. This can be far away from the parent plant. Blackberry, cherry and apple seeds are dispersed in this way.</p> | |
| 2384. |
1ll94thofeachC. Keep a snail inkeep snail and plantconcentration of CO2?with water. Label them A. Bandtest-tube A, a water plant in test-tube B and in C.nt both. Which test-tube would have the highestest |
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| 2385. |
7. Does transpiration serve any useful function in thR What are the components of blood? |
| Answer» <p>The liquid component of the blood in which the followingblood cellsare suspended:</p><p>Red blood cells(erythrocytes). These carry oxygen from the lungs to the rest of the body.</p><p>White blood cells(leukocytes). These help fight infections and aid in the immune process. ...</p><p>Platelets(thrombocytes). These help in blood clotting</p> <p>is the evaporation of water from the plants. The water evaporates through the stomata present on the surface of the leaves.</p> | |
| 2386. |
?Explain7. Does transpiration serve any useful function in the plants?B |
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| 2387. |
alcoholic drinks are produced by |
| Answer» <p>Alcoholic beverage, any fermentedliquor, such as wine, beer, or distilled spirit, that contains ethylalcohol, or ethanol (CH3CH2OH), as an intoxicating agent.</p><p> Wine ismadeby fermenting the juices of grapes or other fruits such as apples (cider), cherries, berries, or plums.</p> | |
| 2388. |
Thirthree test-tubes. Fill žth of each with water. Label them A, B andC Keep a snail in test-tube A. a water plant in test-tube B and in C,keep snail and piant both. Which test-tube would have the highestroncentaton of co.? |
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| 2389. |
you want example bacterial disease |
| Answer» <p>Some bacterial disease includes:</p><p>1.Tuberculosis</p><p>2.Meningitis</p><p>3.Cholera</p><p>4.Typhoid fever</p><p>5.Brucellosis</p> <p>the bacteria diseases are ; </p><p>1) cholera 2) typhoid fever 3) meningitis and so on...are some of coomom diseases</p> <p>Bacterial diseases include any type of illness caused by bacteria. Examples are: Escherichia coli and Salmonella cause food poisoning, helicobacter pylori cause gastritis and ulcers, neisseria gonorrhoeae causes the sexually transmitted diseasegonorrhea, neisseria meningitidis causes meningitis.</p> <p>Tuberculosismeningitisgonorrhea are some common bacterial diseases</p> | |
| 2390. |
What does an atom consist of? |
| Answer» <p>An atom is the smallest particle into which an element can be divided without losing its chemical identity. Atoms consist of a heavy central nucleus surrounded by a cloud of negatively charged particles called electrons. The nucleus contains positive particles (protons) and electricallyneutralparticles (neutrons).</p> | |
| 2391. |
what does an atom consist of ? |
| Answer» <p>Atoms consistof a heavy central nucleus surrounded by a cloud of negatively charged particles called electrons.</p><p> The nucleus contains positive particles (protons) and electrically neutral particles (neutrons). </p><p>An element is a chemical substance thatis made upof single kind ofatom</p> <p>the atom consist of heavy surrounded part called electron. the positive part contain proton and negative part neutron</p> | |
| 2392. |
A consist of a short stem around which an immature overlapping Are folded |
| Answer» <p>A vegetative bud consists of a short stem around which an immature overlapping are folded.</p> | |
| 2393. |
MeutchtheColcrms and ReuTorite the answemProteinPart of the bodHaermoglabina) Musclesby bonesBlood |
| Answer» <p>1) Haemoglobin ----- c) Blood</p><p>2) Ossein ----- b) Bones</p> | |
| 2394. |
global warming has become a matter of concern. |
| Answer» <p>Climate change: evidence and causes</p><p>Yes. Even though an increase of a few degrees in global average temperature does not sound like much, global average temperature during the last ice age was only about 4 to 5 °C (7 to 9 °F) colder than now. Global warming of just a few degrees will be associated with widespread changes in regional and local temperature and precipitation as well as with increases in some types of extreme weather events. These and other changes (such as sea level rise and storm surge) will have serious impacts on human societies and the natural world.</p><p>Both theory and direct observations have confirmed that global warming is associated with greater warming over land than oceans, moistening of the atmosphere, shifts in regional precipitation patterns and increases in extreme weather events, ocean acidification, melting glaciers, and rising sea levels (which increases the risk of coastal inundation and storm surge). Already, record high temperatures are on average significantly outpacing record low temperatures, wet areas are becoming wetter as dry areas are becoming drier, heavy rainstorms have become heavier, and snowpacks (an important source of freshwater for many regions) are decreasing.These impacts are expected to increase with greater warming and will threaten food production, freshwater supplies, coastal infrastructure, and especially the welfare of the huge population currently living in low-lying areas. Even though certain regions may realise some local benefit from the warming, the long-term consequences overall will be disruptive.</p> | |
| 2395. |
Global warming has become a matter of concern |
| Answer» <p>Global warming is already having significant and harmful effects on our communities, our health, and our climate.Sea level rise is accelerating. The number of large wildfires is growing. Dangerous heat waves are becoming more common. Extreme storm events are increasing in many areas. More severe droughts are occurring in others.</p><p>We must take immediate action to address global warmingor these consequences will continue to intensify, grow ever more costly, and increasingly affect the entire planet—including you, your community, and your family.</p><p>The good news is that we have the practical solutions at handto dramatically reduce our carbon emissions, slow the pace of global warming, and pass on a healthier, safer world to future generations.</p><p>With your help, we can accomplish it. Even in these difficult times for climate action, we can make a difference.</p><p>Together, we can tackle global warming.</p><p>Meet our Global Warming </p><p>Global warming is happening now.The planet's temperature is rising. The trend is clear and unmistakable.</p><p>Every one of the past 40 years has been warmer than the 20th century average. 2016 was the hottest year on record. The 12 warmest years on record have all occurred since 1998.</p><p>Globally, the average surface temperature has increased more than one degree Fahrenheit since the late 1800s. Most of that increase has occurred over just the past three decades.</p><p>We are the cause.We are overloading our atmosphere with carbon dioxide, which traps heat and steadily drives up the planet’s temperature. Where does all this carbon come from? The fossil fuels we burn for energy—coal, natural gas, and oil—plus the loss of forests due to deforestation, especially in the tropics.</p> | |
| 2396. |
निe wer A o e e ¥ |
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| 2397. |
rite down the environmental effects and uses of freonand D.D.T |
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| 2398. |
property!What do you feel when you touch a nailimmediately after it is hammered into awooden plank? Why? |
| Answer» <p>A nail becomes warm when hammered into a plank be cause every time the hammer hits the nail, the kinetic energy of the hammer gets transferred into the nail. this energy transfer is seen through the motion of the nail into the plank, the sound that is created every time the nail is hammered and the heat produced, i.e., the nail becoming warmer.</p> | |
| 2399. |
Write five line on plants |
| Answer» <p>Plants are very important for the ecological system of earth. </p><p>They not only provide oxygen but also support variety of herbivorous animals that depend on plants for their food. </p><p>They also act as the main source of vegetarian food for mankind. </p><p>The food we eat, be it bread, rice, pulses, vegetables etc. they all come from plants. They also hold an ecosystem within them.</p> <p>plants play important role in word chain</p><p>plant is our life</p><p>plant is good source of nature</p><p>plant is breathe of our life </p><p>plant give us oxygen food etc and control the ecosystem</p> | |
| 2400. |
c) A bullet having a mass of 10 g andmoving with a speed of 1.5 m/s,penetrates a thick wooden plank ofmass 900 g. The plank was initially!at rest. The bullet gets embedded inthe plank and both move together.Determine their velocity. |
| Answer» <p>too hard question unable to do this sorry</p> | |